Telegraph-insulator



No. 619,555. Patented Feb. l4, I899.

l. B. FRANTZ.

TELEGRAPH INSULATOR.

(Application filed Aug. 4. 1898.;

(No Model.)

UNITED STATES PATENT OFFICE.

ISAAC B. FRANTZ, OF ALLENPORT, PENNSYLVANIA.

TELEGRAPH-INSULATOR.

SPECIFICATION forming part of Letters Patent No. 619,555, dated February 14, 1899.

7 Application filed August 4, 1898- Serial No. 687,702. (No model.)

To all whom it may concern:

Be it known that I, ISAAC B. FRANTZ, a citizen of the United States of America, residing at Allenport, in the county of Washington and State of Pennsylvania, have invented certain new and useful Improvements in Telegraph-Insulators, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to certain new and useful improvements in insulators.

The object of my invention is to provide a device of this character which will dispense with the usual winding of the wire and securing or clamping the same thereto to the insulator.

My invention consists in constructing an insulator of this class of a supporting-pin having a positioning-plate for the wires mounted thereon and a securing-cap therefor.

My invention further consists in the novel combination and arrangements of parts hereinafter more specifically described,illustrated in the accompanying drawings, and particularly pointed out in the claim.

In describing the invention in detail reference is had to the accompanying drawings, in which-- Figure 1 is a perspective view of a pair of my improved insulators in position, having the wires secured thereto. Fig. 2 is a side view of one of the insulators. Fig. 3 is a vertical sectional View thereof, the cross-arm also being partly in section. Fig. t is a top plan view of the positioning-plate, showing the grooves formed thereon for the reception of the wires. Fig. 5 is a perspective view of the positioning-plate. Fig. 6 is a cross-sectional view thereof.

Referring to the drawings, in which like numerals of reference indicate corresponding parts throughout the several views thereof, 1 indicates the cross-arm for the pole, which has formed therein a suitable screw-threaded aperture to receive the screw-threaded end 2 of the supporting-pin 3. This supporting-pin is cut away, as at 4, thereby forminga series of extensions orlugs 5. Formediutegral with The supporting-pin may be Y-shaped, as shown, or any other suitable configuration desired.

Mounted upon the upper face of the supporting-pin is a positioning-plate 7, which is apertured, as at 8, for the" insertion therethrough of the fastening-pin 6. The upper face of the positioning-plate is formed with a series of grooves 9 for the positioning of the wire thereon and also for assisting in keeping the same in position and preventing the slipping of the same. The grooves are vertical, horizontal, and oblique to allow the wire to be positioned in any direction. The lower face thereof is cut away, as at 10, thereby forming extensions orlugs 11. The cut-away portion 10 is adapted to receive the exten sions 5 of the supporting pin, and. the cutaway portions 4 are adapted to receive the extensions 11 of the positioning-plate. This prevents the revolving or moving of the positioning-plate when it is mounted on the sup porting-pin.

For the purpose of securing the wire 12 in position when it is placed in the grooves on the positioning-plate I provide a securing cap 14:,which has an elongated screw-threaded slot 15 and which is adapted to be secured on the fastening-pin 6.

I construct the lower face of the securingcap and upper face of the positioning-plate concaved, as shown, to allow the water to I drain therefrom.

My device may be constructed of any suitable material; but I prefer to construct the securing-cap and positioning-plate of glass and the supporting-pin of wood.

It is readily apparent that when it is desired to secure the wires to the insulator the wires are placed in the suitable groove on the positioning-plate and the securing-cap is screwed upon the same, thereby securely holding the same in position. This prevents the usual method of winding and clamping the wire upon the insulator.

It will be noted that various changes may be made in the details of construction with out departing from the general spirit of my invention.

Having thus fully described my invention,

Letters Patent, is-

threaded securing-cap adapted to be mounted upon the fastening-pin to securely hold the wire and positioning-plate in position, substantially as shown and described.

In testimony whereof I aflix my signature in the presence of two witnesses.

ISAAC B. FRANTZ.

Witnesses:

JOHN NOLAND, E. W. ARTHUR. 

